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Finding the Fourth Proportional to 16,464.72, 22,721.14 and 8,910.88

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Solution

The fourth proportional to 16,464.72, 22,721.14 and 8,910.88 is: 12,296.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,464.72 : 22,721.14 = 8,910.88 : x
  2. Step 2: Convert to fraction form
    16,464.72/22,721.14 = 8,910.88/x
  3. Step 3: Cross multiply
    16,464.72x = 22,721.14 × 8,910.88
  4. Step 4: Simplify right side
    16,464.72x = 202,465,352.00
  5. Step 5: Solve for x
    x = 202,465,352.00/16,464.72
  6. Step 6: Final answer
    x = 12,296.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.